Polishing wheel



Dec. 21, 1937. F. G. cYREx POLI SHING WHEEL Filed Aug. 1'?, 1936Patented Dec. 2l, 1937 UNITED STATES PATENT OFFICE POLISHING WHEELporation of Michigan Application August 17, 1936, Serial No. 96,424

2 Claims.

This invention relates generally to polishing wheels and moreparticularly to composite disk polishing wheels. These polishing orbumng wheels are used for many purposes, as, for in- 5 stance, inpolishing metal articles before plating by means of granular abrasivesglued or cemented to the wheel.

In the construction of the usual composite disk polishing wheel aplurality of disks are positioned and glued together in their originalflat state whereby the resultant polishing wheel has a number of varyingand alternate peripheral polishing surfaces, the soft face of thepolishing disk giving one kind of surface and the glued surface betweenthe disks giving a harder polishing surface whereby the article topolished will be polished or buied unevenly and with scratches or ridgesin its surface.

A primary purpose and object of the present invention is to provide acomposite disk polishing wheel which will overcome the difficultieslencountered with the usual polishing wheel. This is attained byconstructing the polishing wheel in a novel manner whereby the outsidesurface of each of the disks is located in a helical path along thesurface of the polishing wheel whereby during a polishing operation thevarying polishing surfaces on the outside surface of the polishing wheelare evenly distributed. This achieves a brilliant appearing and evenlypolished surface on the article. The polishing wheel of the presentinvention completely and totally eliminates the scoring, gouging andridging of the work.

Another primary advantage resides in the interlocked wheel construction,this construction holdingthe wheel against displacement during use.Revolving wheels of this character are, of course, subject tocentrifugal force.

Another object of the present invention is to provide a polishing wheelwhich is simple to manufacture and easy'to assemble. l

Other objects and advantages reside in my special construction ofpolishing wheel as will become apparent as this invention is more fullyhereinafter described, the invention being illustrated in theaccompanying drawing, in which,

Fig. 1 is an elevation showing a polishing wheel of my novelconstruction mounted upon a spindie.

Fig. 2 is an end view of the assembled polishing wheel. t

Fig. 3 is an end view of one of the single disks, a plurality of whichform the polishing wheel.

Fig. 4 is an edge view of one of the single disks.

Fig. 5 is an edge view of one of the disks of the polishing wheel shownin the position in which the disk, is positioned during the assemblingoperation. I

Like numerals refer to like parts throughout the several figures of thedrawing. 5

Referring to Fig. l, the polishing wheel, indicated by numeral I, ismounted on the spindle 2, the spindle being revolubly mounted in thespindie mounting 3 of a polishing or bufiing machine.

The polishing wheel proper is formed from a l0 number of disks 4, eachof the disks being made of a number of fabric sheets to form the body 5,the body 5 being covered on each of its flat faces by means of canvas orcotton fabric facings 6. The body 5 and the facings 6 are sewed 15together by means of the suitably sewed stitches 1. An opening 8 isformed centrally of each of the disks 4 to receive the spindle 2 of thepolishing machine. The disks are each parted by means of the single cut9, which extends from the spindle opening 8 to the outside edge of the'disk. This out 9 may be made on an angle whereby bevel surfaces I0 areformed at the parting of each of the disks.

To assemble the polishing wheel from the 25 single disks, two disks arespread as shown in Fig. 5 and are threaded together and then the third,fourth, fifth and sixth disks are consecutively threaded onto the mainbody prtion whereby the disks thus threaded together and 30 interlockedform a single polishing wheel with the outside surfaces of each of thedisks positioned helically along the periphery of the polishing wheel.Although six disks are shown as forming the polishing wheel it is to beunderstood 35 that this number may be increased or decreased Withoutavoiding the invention. Glue or some form of adhesive may be placedbetween each of the disks and the'assembled polishing wheel positionedin a press or clamping means and the glue allowed to set with thepressure against the opposite faces of the polishing wheel whereby thefinished polishing wheel will assume the form shown in Fig. l.

As shown in Fig. 1 it will be noted that the out- 45 side surfaces oredges of each of the disks are bent to a different plane at a pointlateral of the position that each of the disks terminate, this change ofplane being the same as the width of the several disks. It will also benoted that 50 the beveled surface i0 of each of the disks is the mediumwhereby the interposed disks are bent to their change of plane. It willbe understoodthat the disks each terminate at both faces of thepolishing wheel and that the outside sur- 55 face or edge of each of thepolishing disks assumes a path substantially helical in shape. Thisgives an even distribution of pressure during the polishing operationand furthermore produces a continual change in the wheel surface alongits entire length whereby lining and scoring of the article being workedupon is prevented.

From the above description it will be appreciated that I haveinventively created a. polishing wheel which is more efcient inasmuch asit produces a better nish on the articles. Additionally it is extremelysimple to manufacture and is easy to assemble.

While I have illustrated and described a particular embodiment of myinvention it will be appreciated that many changes may be made in thesubject matter and form of the invention disclosed without departingfrom the spirit of my invention as set forth in the appended claims.

I claim:

1. A polishing wheel of the class described comprising, a plurality ofdisks, each of said disks being parted at an angle to the face of thedisk, to form a bevel, from its center to its outer edge, said disksbeing threaded together, said disks each being cemented to the face ofthe adjacent disk to form a polishing wheel, the exposed straightportions oif the edge of each disk being positioned parallel to the sidefaces of the polishing wheel and being bent to..an advancing planeaxially o! the partings equal to the thickness of said disks, from one,of the side faces of said polishing wheel .to the other side face ofthe wheel whereby said exposed surfaces of said disks are positionedsubstantially helically along the length of said polishing wheel.

2. An article of the class described, comprising, a plurality ofcircular flexible disks, each of said disks having a bevel parting fromits center to its outer edge, said disk being threaded and cementedtogether with the terminating and bevel ends of the disks exposed atopposite faces of the assembled article, the exposed edges of each ofsaid disks being disposed substantially spirally along the cylindricalface of the article and the bevel of the parting of each disk contactingand cemented to the face of the adjacent FELIX G. CYREX.

